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Fix bugs in error paths of snd_ctl_elem_add()
- NULL reference
- double free (already freed in snd_ctl_add())
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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I'm getting oopses with snd-usb-audio in 32-bit compat environments:
control_compat.c:get_ctl_type() doesn't initialize 'info', so
'itemlist[uinfo->value.enumerated.item]' in
usbmixer.c:mixer_ctl_selector_info() might access random memory (The 'if
((int)uinfo->value.enumerated.item >= cval->max)' doesn't fix all problems
because of the unsigned -> signed conversion.)
Signed-off-by: Juergen Kreileder <jk@blackdown.de>
Cc: Jaroslav Kysela <perex@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
Cc: Greg KH <greg@kroah.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Modules: ALSA Core
Remove BKL from sound/core/info.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.
Modified-by: Ingo Molnar <mingo@elte.hu>
(finished the conversion)
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Modules: ALSA Core
Revert the nested-device patch to keep the compatibility with the
current HAL configuration.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA sequencer
Reduce the maximum possible number of global clients to 16 to make
more numbers available for card clients, and allow dynamically allocated
card client numbers to share the same range as application client
numbers to make sure that all 32 cards can be used at the same time.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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All users of snd_seq_create_kernel_client() have to set the client name
anyway, so we can just pass the name as parameter. This relieves us
from having to muck around with a struct snd_seq_client_info in these
cases.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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The fields of struct snd_seq_client_callback either aren't used or are
always set to the same value, so we can get rid of it altogether.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA sequencer
None of the fields of struct snd_seq_kernel_client was actually used, so
remove them.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: PCM Midlevel
Fixed wrong or supreflous snd_assert()'s.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA Core
Make the control device parent of all other ALSA devices of a card.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA Core,PCM Midlevel
Make the support of old API selectable via config option.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA<-OSS emulation,ALSA sequencer,ALSA<-OSS sequencer
Optimize the code when compiled without CONFIG_PROC_FS (in seq and oss
emulation parts).
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: HWDEP Midlevel,ALSA Core,PCM Midlevel,Timer Midlevel
Optimize the code when compiled without CONFIG_PROC_FS.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: RawMidi Midlevel,HDA generic driver
This patch contains the following possible cleanups:
- pci/hda/hda_proc.c should #include 'hda_local.h' for including the
prototype of it's global function snd_hda_codec_proc_new()
- core/rawmidi.c: make the needlessly global and EXPORT_SYMBOL'ed
function snd_rawmidi_info() static
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA Core
Fix missing include <linux/device.h>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: RawMidi Midlevel
When the output buffer size is changed, runtime->avail must be
adjusted to the new size; otherwise, draining of a bigger buffer would
appear to fail because avail does not reach buffer_size.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA Core,Memalloc module,ALSA sequencer
With dynamic minor numbers, we can increase the number of sound cards.
This requires that the sequencer client numbers of some kernel drivers
are allocated dynamically, too.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA sequencer,Generic drivers
To allow increasing the maximum number of sound cards, we have to limit
the number of sequencer clients per card because client numbers are
still allocated statically.
Reducing the number of clients to four limits the number of sequencer
MIDI ports to 1024 per card.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA Core,ALSA Minor Numbers
Add an option to allocate device file minor numbers dynamically.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Instead of storing the pointers to the device-specific structures in an
array, put them into the struct snd_minor, and look them up dynamically.
This makes the device type modules independent of the minor number
encoding.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA Core
Store the snd_minor structure pointers in one array instead of using a
separate list for each card. This simplifies the mapping from device
files to minor struct by removing the need to know about the encoding
of the card number in the minor number.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Instead of a comment string, store the device type in the snd_minor
structure. This makes snd_minor more flexible, and has the nice side
effect that we don't need anymore to create a separate snd_minor
template for registering a device but can pass the file_operations
directly to snd_register_device().
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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snd_rawmidi_info_select()
Modules: RawMidi Midlevel
In snd_rawmidi_info_select(), check that the device identified by the
passed device number actually exists.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Fix possible races in timer callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add error messages in the critial error path to be more verbose.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: PCM Midlevel
Add NULL check in snd_pcm_suspend*() so that the caller doesn't have to do it
by itself.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA Core,Control Midlevel,/oss/Makefile
Remove the centralized PM control in the sound core.
Each driver is responsible to get callbacks from bus/driver now.
SND_GENERIC_DRIVER is removed together with this action.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA<-OSS sequencer,ALSA sequencer
Remove xxx_t typedefs from the core sequencer OSS-emulation codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: Instrument layer
Remove xxx_t typedefs from the core instrument layer codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA sequencer
Remove xxx_t typedefs from the core sequencer codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA<-OSS emulation
Remove xxx_t typedefs from the core PCM OSS-emulation codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA<-OSS emulation
Remove xxx_t typedefs from the core mixer OSS-emulation codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA Core
Remove xxx_t typedefs from the core OSS-emulation codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: PCM Midlevel
Remove xxx_t typedefs from the core PCM codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA Core
Remove xxx_t typedefs from the core proc handler codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: HWDEP Midlevel
Remove xxx_t typedefs from the core hwdep codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: RawMidi Midlevel
Remove xxx_t typedefs from the core raw MIDI codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: RTC timer driver,Timer Midlevel
Remove xxx_t typedefs from the core timer.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: Control Midlevel
Remove xxx_t typedefs from the core controls.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA Core
Remove xxx_t typedefs from the core component.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA<-OSS emulation
Use standard bitmap functions instead of in-house ones.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Earlier I unifdefed PageCompound, so that snd_pcm_mmap_control_nopage and
others can give out a 0-order component of a higher-order page, which won't
be mistakenly freed when zap_pte_range unmaps it. But many Bad page states
reported a PG_reserved was freed after all: I had missed that we need to
say __GFP_COMP to get compound page behaviour.
Some of these higher-order pages are allocated by snd_malloc_pages, some by
snd_malloc_dev_pages; or if SBUS, by sbus_alloc_consistent - but that has
no gfp arg, so add __GFP_COMP into its sparc32/64 implementations.
I'm still rather puzzled that DRM seems not to need a similar change.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This allows us to eliminate the casts in the drivers, and eventually
remove the use of the device_driver function pointer methods for
platform device drivers.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jaroslav Kysela <perex@suse.de>
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Modules: ALSA Core
Fix a typo (bogus check) in the last patch to fix Oops with suspend/resume.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: HWDEP Midlevel,PCM Midlevel,RawMidi Midlevel,ALSA Core
Replace usage of CONFIG_SND_MAJOR with snd_major, where appropriate.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Modules: ALSA Core,ALSA Minor Numbers
Remove the unused and undefined symbols SNDRV_DEVICE_TYPE_{MIXER,
PCM_PLOOP,PCM_CLOOP}, and introduce a new symbol SNDRV_MINOR_GLOBAL
for non-card-specific devices like the sequencer or the timer.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size. Also use
human-time conversion functions instead of hard-coded division to avoid
rounding issues.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: ALSA<-OSS emulation,USB generic driver,USB USX2Y
Added missing KERN_* prefix to printk.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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